feedback7: merge fb7-gh-sim — PR #348 (take-the-highest chains), PR #293 (REA-Y in the engine), #329 ports (异客 13 tiles, 歌蕾蒂娅 net radius 1, 搅拌机 latest first, 大帝 uncapped), PR #365 (骨刺 forms + PRTS targeting), #298 (instant non-attack skills recast at most once per attack interval, attacks untouched), #364 (先兆者 shell 3×3), #220 (速射手 air first), 余 skips noStack bonds (owner)

- Conflict: docs/PLAYING.md 技能自动释放 bullet — both insertions kept (the 铁钳号 rule from fb7-owner-sim, the #298
  pacing sentence).
- Grok review: MERGE AFTER FIXES — the HIGH #298 finding (the cast replaced the due attack) fixed on the branch
  (db29acf9: per-skill nextCastAt; golden of #298 alone shrank from 84 scenarios to 2).
- Golden union: 4 matches differ from HEAD though the branch alone left them (coop2-NORMAL-3, coop4-ABYSS-7,
  coop2-NORMAL-8-serverrun, solo-HARD-9-boosted): HEAD's side had moved all four (#333's shop RNG …) and on those new
  bot paths the merged rules apply — the diffs are in-battle layer gains / damage (卡西米尔 50 → 45, 精准 80 → 76,
  叙拉古 176 → 168, kills ±2, solo-HARD-9 LP 397 → 399), no outcome change.
- Broad node --test 5571 (5570 pass, 0 fail, 1 skipped); lint 0 errors; typecheck.

docs/ASSETS.md

@@ -279,8 +279,12 @@ catch-up frames and hidden tabs (`keepsState`), the game screen's pre-entry buff
 event queue (`render/interp.js isCosmeticEvent`) too — or, for a view built mid-battle, UnitInfo `form`, which `render/app/info.js renderInfo` passes to the view; a
 `change` clip plays once first, an `end` clip is timed from the fx's `dur` to finish as that state ends, keeping the
 current form's death clip until the next form's fx). A blocked or revealed 隐匿 enemy is drawn solid: the sim sends the
-stealth bit only while its 隐匿 is on:
+stealth bit only while its 隐匿 is on — and 假想敌：骨刺 changes model with that bit, not with an fx (`STEALTH_FORMS`, GitHub
+#296, PR #365): the manifest's `*_A` (the three-headed snake) while the bit is on, its `*_B` set (form `revealed`) the
+moment it is blocked or revealed, `*_A` again when its 隐匿 is back; no change clip, a running attack, stun or freeze
+pose carried over (`render/spine.js syncFormPose`). The forms:
 - 掠海漂移体's crawl (`Change`, then `*_02`);
+- 假想敌：骨刺 (`*_A` / `*_B`, above);
 - 转译基底·α's three forms (`A_Die_B` / `_C` / `_D`, 2 s each, then `B_*` 寻仇者, `C_*` 幽灵, `D_*` 特战术师);
 - the 深池逐火 embers (`Die`, then `Idle_2` / `Move_2` / `Die_2`; `Revive` ends as it stands up) and 假想敌：再生's puppet
   (`A_Die`, then `B_*`; `B_Revive`);